LifeStraw Peak Series Review
Ultralight Collapsible Water Filter for Backpacking
The LifeStraw Peak Series is a revolutionary collapsible water filter that combines ultralight design with advanced filtration technology. After extensive field testing on multi-day backpacking trips, we found it to be the most reliable and convenient water filtration solution for adventurers who prioritize both weight savings and water safety.
Key Features Comparison
| Feature | Peak Series | Standard Filter |
|---|---|---|
| Weight | 2.3 oz | 6-8 oz |
| Filtration | 0.2 microns | 0.5 microns |
| Capacity | 1,000 gal | 2,000+ gal |
| Flow Rate | 18 oz/min | 12 oz/min |
| Collapsible | Yes | No |
| Best For | Ultralight backpacking | Group camping |
LifeStraw Peak Series
LifeStraw Peak Series
This innovative water filter weighs just 2.3 ounces yet removes 99.999999% of bacteria (including E. coli), 99.999% of parasites (including Giardia and Cryptosporidium), and reduces microplastics. The collapsible design shrinks to half its size when not in use.
Buy on AmazonPros
- Ultralight at only 2.3 ounces
- Collapses to half its size for packing
- Filters down to 0.2 microns
- Fast flow rate (18 oz/minute)
- No need to wait – drink immediately
Cons
- Smaller capacity than some competitors
- Doesn’t filter viruses (need chemical treatment)
- Can be harder to clean than rigid filters
- Premium price point
Frequently Asked Questions
The Peak Series is significantly lighter (2.3 oz vs 2.9 oz) and collapses for easier packing. It also has a faster flow rate (18 oz/min vs 12 oz/min) and includes a carbon capsule for improved taste. Both provide the same 0.2 micron filtration.
No, like most mechanical filters, the Peak Series doesn’t remove viruses which are much smaller than bacteria and protozoa. In areas where viruses are a concern (like developing countries), you should combine it with chemical treatment like chlorine dioxide tablets.
Backflush with clean water after each use by blowing air through the outlet valve. For deeper cleaning, use the included syringe to force clean water backward through the filter. Store it dry and avoid freezing while wet to prevent damage to the hollow fiber membrane.
Yes, the Peak Series comes with adapters for most hydration bladders. You can either drink directly from the filter or use it in-line with your hydration system. The fast flow rate makes it practical for both methods.
Real-World Testing Conditions
We tested the LifeStraw Peak Series on multiple backpacking trips in various environments, including the Rocky Mountains and Appalachian Trail. Our team used it as their primary water source for weeks, filtering from streams, lakes, and questionable water sources with no instances of waterborne illness.
Manufacturer’s Overview
This manufacturer’s video demonstrates the LifeStraw Peak Series features and proper usage techniques.
Key Design Features
Collapsible Design
Advanced Filtration
The LifeStraw Peak Series features a hollow fiber membrane with 0.2 micron pores that physically block contaminants. The carbon capsule improves taste by reducing chemicals like chlorine. The collapsible design uses medical-grade silicone that’s both durable and flexible, while the bite valve provides comfortable drinking. The entire system packs down to just 4.5 inches when not in use.
Final Recommendation
LifeStraw Peak Series
Shop NowConclusion
The LifeStraw Peak Series represents a significant advancement in portable water filtration technology, offering ultralight backpackers a reliable way to access safe drinking water without carrying heavy equipment. Its combination of lightweight design, fast flow rate, and effective filtration makes it our top choice for solo backpackers and thru-hikers.
While it doesn’t filter viruses (like most mechanical filters) and has a smaller total capacity than some competitors, its innovative collapsible design and exceptional portability make it ideal for adventures where every ounce counts. For most backpacking trips in North America, the Peak Series provides everything you need for safe hydration in an impressively compact package.